Ultrafast all-optical coherence of molecular electron spins in room-temperature water solution DOI
Erica Sutcliffe, Nathanael P. Kazmierczak, Ryan G. Hadt

и другие.

Science, Год журнала: 2024, Номер 386(6724), С. 888 - 892

Опубликована: Ноя. 7, 2024

The tunability and spatial precision of paramagnetic molecules makes them attractive for quantum sensing. However, usual microwave-based detection methods have poor temporal resolution, optical compatible with room-temperature solutions remained elusive. In this study, we utilized pump-probe polarization spectroscopy to initialize track electron spin coherence in a molecule. Designed efficiently couple spins light, aqueous potassium hexachloroiridate(IV) enabled few-picosecond free-induction decay at room temperature micromolar concentrations. Viscosity was found strongly vary decoherence lifetimes. This approach has improved the experimental time resolution by up five orders magnitude, making it possible observe molecular system that only exhibits below 25 kelvin traditional techniques.

Язык: Английский

Molecular Design for Optically Induced Magnetization: Targeting Excited State Orbital Degeneracy in Tungsten(V) Complexes DOI Creative Commons

Ian E. Ramsier,

Alysia Mandato, Sunil Saxena

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Май 20, 2025

The rise of quantum information science has spurred chemists to prepare new molecules that serve as useful building blocks in technologies the future. Implementation molecular spin-based qubits requires methods induce high spin polarization samples. Herein, we report design criteria develop axially symmetric spin-1/2 amenable optically induced magnetization (OIM), a technique using circularly polarized (CP) excitation deliver polarization. We apply these series tungsten(V) chalcogenide complexes are demonstrated have large spin-sensitive responses CP light magnetic circular dichroism (MCD) could allow up ∼20% through OIM. Pulsed electron paramagnetic resonance (EPR) spectra reveal systems improved relaxation times over like K2IrCl6, species recently investigated by OIM, and field-swept spin-echo (FS-ESE) experiments show they remarkable lack anisotropy their phase-memory Tm times. general point toward future ways improve OIM-initializable qubits.

Язык: Английский

Процитировано

0

Ultrafast all-optical coherence of molecular electron spins in room-temperature water solution DOI
Erica Sutcliffe, Nathanael P. Kazmierczak, Ryan G. Hadt

и другие.

Science, Год журнала: 2024, Номер 386(6724), С. 888 - 892

Опубликована: Ноя. 7, 2024

The tunability and spatial precision of paramagnetic molecules makes them attractive for quantum sensing. However, usual microwave-based detection methods have poor temporal resolution, optical compatible with room-temperature solutions remained elusive. In this study, we utilized pump-probe polarization spectroscopy to initialize track electron spin coherence in a molecule. Designed efficiently couple spins light, aqueous potassium hexachloroiridate(IV) enabled few-picosecond free-induction decay at room temperature micromolar concentrations. Viscosity was found strongly vary decoherence lifetimes. This approach has improved the experimental time resolution by up five orders magnitude, making it possible observe molecular system that only exhibits below 25 kelvin traditional techniques.

Язык: Английский

Процитировано

2